文件备份

import java.io.*;
import java.nio.channels.*;

/**
 *
 * @author 疏影暗香
 */
public class FileBack {

    public static void copyDir(String srcDir, String desDir) throws IOException{
        File src = new File(srcDir);
        File[] fileList = src.listFiles();

        for(int i=0;i<fileList.length;i++) {
            if(fileList[i].isDirectory()) {
                File subDir = new File(desDir+"/"+fileList[i].getName());
                System.out.println(subDir.getAbsolutePath());
                if(!subDir.exists()){
                    subDir.mkdir();
                }
                copyDir(srcDir + "/" + fileList[i].getName(), desDir+ "/" + fileList[i].getName());

            }else {
                File descDir = new File(desDir);
                if (!descDir.exists()) {
                    descDir.mkdir();
                }
                copyFile(srcDir+"/" + fileList[i].getName(),  desDir+ "/" + fileList[i].getName());
            }
         }
        System.out.println("文件备份结束......");
    }

    public static void copyFile(String srcFile, String destFile) throws java.io.FileNotFoundException, java.io.IOException {
        FileInputStream fis = new FileInputStream(srcFile);
        FileOutputStream fos = new FileOutputStream(destFile);

        FileChannel fcin = fis.getChannel();
        FileChannel fcout = fos.getChannel();
        fcin.transferTo(0, fcin.size(), fcout);
        fcin.close();
        fcout.close();
        fis.close();
        fos.close();
    }
    public static void main(String[] args) throws Exception{
     System.out.print("请输入文件路径后回车：");
     BufferedReader bin = new BufferedReader(new InputStreamReader(System.in));    
        String src = "";
        src = bin.readLine();
        String des = "f:/Inetpub";
        File f = new File(des);
        if(!(f.exists())) {
            f.mkdir();
        }
        FileBack.copyDir(src, des);
    }
}